===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/projects/prefetch.html,v
retrieving revision 1.31
@@ -781,13 +781,13 @@
search from www.mips.com.</p>
<p><a name="ref_11">[11]</a>
-<a href="http://www-cs-faculty.stanford.edu/~knuth/mmop.html">
+<a href="https://www-cs-faculty.stanford.edu/~knuth/mmop.html">
MMIX Op Codes</a>, Don Knuth.</p>
<p><a name="ref_12">[12]</a>
<em>The Art of Computer Programming, Fascicle 1: MMIX</em>, Don Knuth,
Addison Wesley Longman, 2001;
-<a href="http://www-cs-faculty.stanford.edu/~knuth/fasc1.ps.gz">
+<a href="https://www-cs-faculty.stanford.edu/~knuth/fasc1.ps.gz">
http://www-cs-faculty.stanford.edu/~uno/fasc1.ps.gz</a>.</p>
<p><a name="ref_13">[13]</a>